EXTRACTION OF METALS FROM SULPHIDE MINERALS Russian patent published in 2012 - IPC C22B3/06 C22B23/00

Abstract RU 2448171 C2

FIELD: metallurgy.

SUBSTANCE: method has been elaborated for two-stage dilution of nickel in leaching acid. Suspension of mineral and acid is activated by oxidation. It is performed during T1 time by means of electrolysis or alternatively chemically, by adding for example of oxidating acid to mineral. After activation the suspension is exposed in oxygen-free conditions during T2 time. During T2 time much quicker dilution of sulphide begins; quick decomposition of sulphide gives the possibility to nickel to be diluted and thus leached from mineral. Diluted nickel is extracted from leaching acid for example by electrochemical extraction.

EFFECT: improved process economy.

23 cl, 2 dwg

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RU 2 448 171 C2

Authors

Sid Leonard Pol

Shelp Dzhin Sidni

Dates

2012-04-20—Published

2007-09-13—Filed